Add Formula Library ratings, Job Profitability report, and Quote Revision History improvements

- Formula Library ratings: thumbs up/down per company per formula; toggle on/off; sorts by net score; own formulas not rateable; FormulaLibraryRating entity + migration AddFormulaLibraryRatings
- Job Profitability report: actual labor cost (logged hours x StandardLaborRate) vs powder cost vs billed price per job; gross margin % color-coded; time-tracked-only filter; totals footer
- Quote Revision History: track Total price changes on every save; log Sent/Resent events with recipient email; replace flat table with grouped timeline UI (icons per event type, total-change badge on header)
- Setup Wizard: cap CompletedCount at TotalSteps so old 10-step data no longer shows 10/5
- Formula Library card: fix badge overflow on long titles; add Rate: label to make voting buttons discoverable
- Help docs and AI knowledge base updated for all three features

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/PowderCoating.Web/Controllers/QuotesController.cs

@@ -1320,6 +1320,7 @@ public class QuotesController : Controller
                 Terms = quote.Terms,
                 Notes = quote.Notes,
                 TaxPercent = quote.TaxPercent,
+                Total = quote.Total,
                 DiscountType = quote.DiscountType,
                 DiscountValue = quote.DiscountValue,
                 DiscountReason = quote.DiscountReason,
@@ -1342,9 +1343,27 @@ public class QuotesController : Controller
             // Set calculated pricing — snapshot at save time; never recalculate on load
             _quotePricingAssemblyService.ApplyPricingSnapshot(quote, pricingResult);
 
-            // Track changes
+            // All change history records are accumulated here, then saved in bulk below
             var changeHistories = new List<QuoteChangeHistory>();
 
+            // Log a total-change entry now that the new Total is known
+            if (Math.Round(oldValues.Total, 2) != Math.Round(quote.Total, 2))
+            {
+                changeHistories.Add(new QuoteChangeHistory
+                {
+                    QuoteId = quote.Id,
+                    ChangedByUserId = currentUser.Id,
+                    ChangedAt = DateTime.UtcNow,
+                    FieldName = "Total",
+                    OldValue = oldValues.Total.ToString("C"),
+                    NewValue = quote.Total.ToString("C"),
+                    ChangeDescription = $"Total changed from {oldValues.Total:C} to {quote.Total:C}",
+                    CompanyId = currentUser.CompanyId
+                });
+            }
+
+            // Track changes
+
             _logger.LogInformation("=== CHANGE TRACKING DEBUG ===");
             _logger.LogInformation("Old Status: {OldStatus}, New Status: {NewStatus}", oldValues.QuoteStatusId, quote.QuoteStatusId);
             _logger.LogInformation("Old Date: {OldDate}, New Date: {NewDate}", oldValues.QuoteDate, quote.QuoteDate);
@@ -3174,6 +3193,22 @@ public class QuotesController : Controller
             }
 
             await _unitOfWork.Quotes.UpdateAsync(quote);
+
+            // Log send event so the history timeline shows when the quote was emailed
+            var sentHistoryEntry = new QuoteChangeHistory
+            {
+                QuoteId = quote.Id,
+                ChangedByUserId = currentUser!.Id,
+                ChangedAt = DateTime.UtcNow,
+                FieldName = "Sent",
+                OldValue = null,
+                NewValue = recipientEmail,
+                ChangeDescription = $"Quote sent to {recipientName} ({recipientEmail})",
+                CompanyId = quote.CompanyId,
+                CreatedAt = DateTime.UtcNow
+            };
+            await _unitOfWork.QuoteChangeHistories.AddAsync(sentHistoryEntry);
+
             await _unitOfWork.CompleteAsync();
 
             await _notificationService.NotifyQuoteSentAsync(quote, pdfBytes, pdfFilename, trimmedOverride);